Objective:To investigate the knowledge, attitudes and practice of child sexual abuse (CSA) prevention education in parents of elementary school pupils.Method:Two hundred and seventy one parents were surveyed by anonymous self-administered questionnaire in five classes of grade 1 to grade 5 of a elementary school. The questions about awareness of CSA and communications on how to prevent CSA with their children were asked.Result:Among this sample, 93.6% of parents approved of school CSA prevention education. Overall, about half parents lack of knowledge of CSA prevention, the communications with their children were also not enough. Only 1.8% of parents had provided books or audiovisuals about CSA prevention for their children. The scores of knowledge, attitudes and practice of CSA prevention education of parents whose parents addressed this in their childhood were significantly higher than those of parents who had no this experience.Conclusions:The research of CSA prevention education in elementary school should be paid more attention, to produce related books and audiovisuals as soon as possible, to increase parents' awareness of CSA prevention.

Objective To investigate the culture and proliferation of dendritic cells from human cord blood and malignant pleural effusions and identify the phenotype and the function of them in vitro. Methods Existing DCs were obtained from cord blood and malignant pleural effusions. The DCs were cultured with IL-4, GM-CSF and TNF-?. The morphological properties of DCs were observed by invert optical microscope. The phenotypes of DCs were analysed by flow cytometry. The proliferative bioactivities of T cells activated by DCs were observed with mixed lymphocyte reaction (MLR). Results No remarkable differences were found in the morphology and cellular phenotype of the DC, derived from two different sources, but there was remarkable difference between their culture time. The DCs from two different sources could activate homologous lymphocytes to proliferate mostly. But the capacity to stimulate the proliferation of homologous lymphocytes had remarkable difference. Conclusion Mature DCs could be induced from cord blood and malignant pleural effusions.

Objective To explore the role of integrin in CCL18 for promoting breast cancer SK-3 rd cells invasion and migration process to illuminate the molecular mechanism of CCL 18 for promoting breast cancer SK-3 rd cells invasion and migration process . Methods The flow cytometry was adopted to detect CCL18-induced integrin aggregation ;Western blot was used to detect the focal adhesion kinase(FAK ) activation ,the infiltrating migrationin experiment was adopted to determine the invasion and migration of SK-3rd cells and the siRNAs transfection was used to detect the expression of silence integrin β1 .Results CCL18 promoted the in-tegrinβ1 aggregation in breast cancer SK-3rd cell surface and further promoted the integrin-mediated phosphorylated activation of FAK .Under the reaction of CCL18 ,the cells number of SK-3rd cellular invasion and migration was increased by ten times (P<0 .01) ,which was obviously decreased by siRNA silenced integrin β1 .Conclusion CCL18 promotes breast cancer invasion and mi-gration via integrin aggregation .

目的观察有氧运动训练对老年性原发性高血压病血压的控制作用。方法160例老年性原发性高血压病患者分为轻度训练组、轻度对照组、中度训练组和中度对照组,各组40例。训练组采用有氧运动训练(步行或骑车) 60分钟/次,每周3次;中度患者配合药物治疗。比较训练3个月前后的收缩压和舒张压。结果训练后收缩压和舒张压与训练前相比,各训练组均有显著性差异(P<0.01或P<0.05),各对照组则无显著性差异。而训练组与相应对照组相比亦均有显著性差异(P<0.01或P<0.05)。结论有氧运动训练可有效降低或控制老年性原发性高血压。

Objective To evaluate the safety,local efficacy and survival rates of isolated pulmonary metastases from colorectal carcinoma treated with CT-guided radiofrequency ablation.Methods A total of 28 patients with isolated pulmonary metastases from colorectal carcinoma were performed with CT-guided radiofrequency ablation (radiofrequency ablation group).The size of the lesion was 1.2-5.0 (2.9 ± 1.0) cm.During the same time,9 patients,who did not take any treatment for isolated pulmonary metastases from colorectal carcinoma,were collected as control group.The size of the lesion was 2.0-5.0 (3.6 ± 1.0) cm.The local progression-free rates and overall survival rates were compared.Results All the cases were able to complete the radiofrequency ablation in radiofrequency ablation group.During and after the procedure,no major complications occurred.The 1-,2-,and 3-year local progression-free rates and overall survival rates in radiofrequency ablation group were significantly higher than those in control group.The local progression-free rates were 89.3％ vs.76.2％,78.6％ vs.33.9％,70.7％ vs.16.9％.The overall survival rates were 96.4％ vs.77.8％,85.7％ vs.44.4％,56.7％ vs.22.2％.The differences between two groups had statistical significance (P ＜ 0.01).Conclusion CT-guided radiofrequency ablation for isolated pulmonary metastasis from colorectal carcinoma is a safe,effective,minimally invasive treatment,and can significantly improve the local progression-free rates and overall survival rates.

Objective To investigate the clinical significance of retaining axillary sheath in axillary lymph node dissection of breast cancer surgery. Methods Four hundred and two patients received modified radical mastectomy from January 2004 to January 2008 and followed up for 12 months were retrospectively analyzed. They were divided into two groups (group A and B) according to whether retaining axillary sheath in operation. Compared the morbidities of axillary effusion and edema of upper limbs between two groups. Results The morbidity of axillary effusion after operation in group A (5.3%, 13/243 ) was lower than that in group B (10.7%,17/159)(P＜0.05). Based on the data followed up for 1,6, 12 months after operation, the morbidity of edema of upper limbs in group A were also lower than those in group B (P ＜0.01). Conclusion Retaining axillary sheath when there is no evidence of lymph node metastasis in axillary sheath, will prominently lower the morbidities of axillary effusion and edema of upper limbs,improve the life quality of patients.

Objective To investigate the clinical significance of the ST segment changing in treadmill exercise test positive for the diagnosis of coronary heart disease. Methods 133 patients (hospitalized from January 2014 to January 2015) with the ST segment depression≥0.1 mm in treadmill exercise test were retrospectively analyzed. Patients were divided into the observation group and the control group according to the coronary angiography (the dividing line is artery stenosis is more than 50% or not ). ST-segment depression margin and recovery time of the two groups were compared. ST-segment depression margin and recovery time of patients with different vascular lesion number were also analyzed. Results In 133 cases, 79 cases of coronary angiography were positive(59.4%). Positive rate of ST segment recovery time(> 90 s) was 76.9% in. The maximal ST-segment depression margin and recovery time in the observation group were more than the control group, the difference was statistically significant (P<0.05). Compared with the maximal ST segment depression margin in single-vessel stenosis group , the difference in the double-vessel and multi-vessel stenosis group was not statistically significant(P > 0.05). But in terms of ST-segment recovery time, the double-vessel and multivessel stenosis group were higher than the single-vessel stenosis group , and the difference was statistically significant (P< 0.05). Conclusion Clinically, patients with TET positive combined the ST segment depression and ST-segment recovery time are important hints for the diagnosis of coronary artery disease , and is worthy of promotion.

Objective: This study aims to understand the awareness, attitude and parent-child communication of child sexual abuse (CSA) prevention among mothers of children with hearing loss. Methods: Data was collected using anonymous self-administered questionnaires among 188 mothers of children with hearing loss in 7 hearing rehabilitation institutes in Beijing, during April to June in 2018. Results: Mothers of children with hearing loss who participated in this study lacked knowledge. Only 3 participants (1.6%) could correctly answer all the 10 items. Besides, 71 participants (37.8%) held positive or supportive attitude towards all the 6 items of CSA prevention education. Most mothers thought CSA prevention education could help to prevent CSA, agreed with school-based relative education, and permitted their children to attend education activities. In addition, the participants lacked parent-child communication of CSA prevention, for only 12 mothers (6.4%) had talked with children about all the topics of the 10 items. Knowledge of mothers with high school or higher education was better than those with middle school or lower education(β=0.98, P<0.01). Scores of communication were significantly higher among mothers of elder children(β=0.33, P<0.01). Conclusion Further intervention should promote awareness and parent-child communication about CSA prevention among mothers of children with hearing loss.

Objective: To explore the incidence and influencing factors of child emotional neglect, and to provide evidence for the relevant departments to prevent child emotional neglect. Methods: Stratified random cluster sampling method was used to select 1 354 parents from a county of Henan Province. Anonymous questionnaire survey was conducted among them to investigate child emotional neglect, logistic regression analysis was used to analyze the influencing factors of emotional neglect. Results: The total incidence of child emotional neglect was 15.7%, and the rate of boys and girls was 14.7% and 16.8%, respectively, that of fathers and mothers was 18.3% and 15.1%, respectively. There were no statistically significant differences in rates between fathers and mothers’ emotional neglect behaviors, neither between boys and girls (χ2=1.18，3.14, P>0.05).90.2% parents could often/always console children when they were hurt or feared. Multivariate logistic regression analysis showed that risk factors of high emotional neglect incidence included living in rural areas, poorer family economic status, parents with lower social support and childhood neglect experience, biological parents are not married(OR=2.71, 2.56, 2.64, 2.66, 4.11, 1.76, P<0.05). Conclusion Parents’ emotional neglect of kindergarten children existed in the research area, attention should be paid to the emotional neglect of parents from rural areas, and parental education activities should be carried out to enhance parents’ parenting skills.

Objective: To systematically evaluate effectiveness of exercises on inflammatory response among obese adolescents. Methods: By searching CNKI, PubMed, Web of Science, EBSCOhost and other databases, randomized controlled trials (RCTs) on the influence of different exercises on inflammatory indicators in obese adolescents were collected according to the inclusion and exclusion criteria. Cochrane evaluation tools were conducted methodological studies on the included literature quality evaluation, and RevMan 5.3 analysis software was used for statistical analysis. Results: A total of 21 RCTs were included, involving 1 020 subjects. The results of Meta analysis showed that aerobic training (AT) and aerobic plus resistance training (AT+RT) could significantly reduce BMI, serum C reactive protein (CRP) and leptin levels in obese adolescents. In addition, the effects of AT+RT on pro inflammatory CRP ( MD=-0.52, 95%CI=-0.75--0.30, P <0.01), leptin ( MD=-7.20, 95%CI=-10.45--3.94, P <0.01) and anti inflammatory adiponectin ( MD=1.28, 95%CI=1.01-1.55, P <0.01) were stronger than AT. High intensity interval training (HIIT) was associated with BMI reduction ( MD=-1.14, 95%CI=-1.92--0.36, P <0.01) and increased adiponectin in obese adolescents ( MD=1.79, 95%CI=1.09-2.50, P <0.01), and HIIT was superior in improving adiponectin level in obese adolescents than AT and AT+RT. Conclusion Long term and regular AT, AT+RT and HIIT can reduce inflammation in obese adolescents. HIIT is a notable exercise method for obese adolescents to resist inflammation.